Topological-defect-induced surface charge heterogeneities in nematic electrolytes

Miha Ravnik (Avtor), Jeffrey Christopher Everts (Avtor)

Povzetek

We show that topological defects in an ion-doped nematic liquid crystal can be used to manipulate the surface charge distribution on chemically homogeneous, charge-regulating external surfaces, using a minimal theoretical model. In particular, the location and type of the defect encodes the precise distribution of surface charges and the effect is enhanced when the liquid crystal is flexoelectric. We demonstrate the principle for patterned surfaces and charged colloidal spheres. More generally, our results indicate an interesting approach to control surface charges on external surfaces without changing the surface chemistry.

Ključne besede

nematski tekoči kristali;topološki defekti;fleksoelektričnost;dielektričnost;elektrostatika;nematic liquid crystals;topological defects;flexoelectricity;dielectric properties;electrostatics;

Podatki

Jezik:	Angleški jezik
Leto izida:	2020
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL FMF - Fakulteta za matematiko in fiziko
UDK:	538.9
COBISS:	23706371
ISSN:	0031-9007
Št. ogledov:	1453
Št. prenosov:	400
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	nematski tekoči kristali;topološki defekti;fleksoelektričnost;dielektričnost;elektrostatika;
Strani:	str. 037801-1-037801-7
Letnik:	ǂVol. ǂ125
Zvezek:	ǂiss. ǂ3
Čas izdaje:	2020
DOI:	10.1103/PhysRevLett.125.037801
ID:	11920741